Sex attractant for Diloba caeruleocephala (L.), (Lep., Dilobidae) - (Z)-8-tridecenyl acetate

For seven homologous compounds, the highest electro-antennography responses from male Diloba caeruleocephala (L.) were elicited by (Z)-5-decenyl aceta te (Z)-7-dodecenyl acetate and (Z)-8-tridecenyl acetate. The (Z)-8-tridecen yl acetate caused significant attraction of males of this species in the fi eld, in both Bulgaria and Hungary. (Z)-8-pentadecenyl acetate, when added a s a 10% admixture to the latter, acted as an attractant inhibitor. In Bulga ria, the flight period of this species, as established by means of pheromon e traps, commenced at the beginning of September and lasted until the middl e of October.